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TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Published by Universitas Muhammadiyah Cileungsi
ISSN : 20873336     EISSN : 27214729     DOI : https://doi.org/10.37373/tekno.v13i2
Core Subject :
Aim and Scope Aim The aim of this journal publication is to disseminate the fundamental ideas or ideas that have been accomplished and the study findings in technology, science and informatics. In terms of community sector study outcomes, the Journal of Technoscience primarily reports on the main issues. Scope Science issues Scopes related to this topic include: Agriculture, Climate, Mathematics & Statistics, Applied Physics, Fundamental Science in Engineering, Bioscience & Biotechnology. Engineering and Technology issues Scopes related to this topic include: Mechanical & Structures, Electrical, Communications & Systems, Fuel and Energy, Material, Termal Management, Safety System and Technology, Maintenance Technology, Automotive . Information and Technology issues Scopes related to this topic include: Artificial Intelligence, Computer Science, E-learning & Curriculum, Information Science, Multimedia, Science Technologies, Information Networks, Internet & Mobile Computing, Machine Learning, Information Science.
Arjuna Subject : -
Articles 222 Documents
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Overview of 5G services and spectrum deployment in urban regions Suryanto Suryanto; Yuli Kurnia Ningsih
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.651

Abstract

The development of 2G, 3G, 4G, WiFi, and other advancements that provide greater reliability and coverage and are focused on high data rates and low latency has led to the development of 5G technology. We must, however, overcome a number of obstacles before we can deploy 5G in Indonesia, particularly in terms of choosing the appropriate frequency. This assessment can help in assessing and resolving issues with spectrum, infrastructure, and other technical factors while also helping to understand the demands and characteristics of urban areas and determine the best spectrum allocation to fulfill the increasing demand for connectivity in urban areas. This study's methodology include a qualitative literature evaluation and mini-review of related studies. This study attempts to review 5G technology and discuss the difficulties and barriers that must be overcome for it to be used in urban settings. The findings of this study point to significant difficulties and barriers in the deployment of 5G networks in Indonesia. If rules are in place to support them, particularly those regarding the frequency band designated for 5G, all hurdles and obstacles will turn into possibilities. The primary frequency range needed for 5G implementations, particularly the 700 MHz (low band) frequency, 3.3–4.2 GHz (mid band), and 24.2–29.5 GHz (high band), must be able to access enough spectrum to meet the demands expected of 5G implementations. In order to increase outdoor capacity in cities with high user concentrations, high-band radio frequency offers convenience in satisfying user needs according to user density and area distribution. for instance, near other public areas, the major business district, and train and bus stations. In comparison to high band radio frequency, low band and medium band radio frequency have a greater coverage area, making them more suitable for use in rural areas with low population densities but strong demand for network services. The requirement for network infrastructure has the same issues as 4G network services, including a lack of coverage for all of Indonesia. Urban areas have more internet users than rural areas, therefore there is a need for suitable infrastructure to expand the reach of 5G technology, which has extremely low latency, address network capacity issues, improve coverage, and offer superior 5G NR services
Travel application itinerary using the traveling salesman problem method and the held-karp algorithm Ade Zaldi Eureka Zendar Ade; Syarifah Putri Agustini Alkadri; Izhan Fakhruzi
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.682

Abstract

The Kapuas Hulu Regency is home to several fascinating tourist spots, yet finding directions inside the regency can be challenging for visitors. The Held-Karp Algorithm can be used to find the fastest route between any two cities with only one stop, which is known as the Traveling Salesman Problem (TSP). Bellman, Held, and Karp created this dynamic program in 1962 with the goal of minimizing travel time and expenses. The number of cities to be visited (forming nodes in the graph), the point of origin (the starting node in the graph), and the distances between the cities (weights between the nodes) must all be specified in the model of the TSP problem before the Held-Karp Algorithm can be applied. The focus of this study will be tourist destinations in West Kalimantan's Kapuas Hulu Regency. A system that uses the Held-Karp Algorithm to find the shortest paths between different tourist spots in Kapuas Hulu Regency will be built as part of this project. As a result, this technology will help tourists plan their trips effectively and minimize their expenditures for both time and transportation
Analysis of changes in bread during frozen storage with pre-cooking and steaming Siti Nur Azizah; Wisnu Adi Yulianto; Ch. Lilis Suryani
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.685

Abstract

Frozen storage methods in bakery products have been widely applied to maintain quality and extend shelf life. Early cooking by steaming followed by frozen storage on bread is an effective way to slow down the spoilage process. The length of time frozen storage affects the physical, chemical, microstructure, thermal, and sensory reception properties. The purpose of this study is to evaluate the quality of bread by pre-cooking steaming during frozen storage and after re-cooking. The research was carried out with the storage time treatment factors, time of 0, 14, 28, 42, 56 and 70. Parameters analyzed in frozen bread include texture testing, volume expansion rate, moisture content, dissolved protein content and crumbs (SEM), thermal properties with Differential Scanning Calorimatry, as well as the level of preference. The result showed that the longer the frozen storage, the harder the texture, the level of volume development, the lower the water and dissolved protein content and the smaller the pores of the bread. Bread texture increased in hardness along with the lenght of frozen storage, namely 8.70 N increased to 17.44 N, while the water content decreased from 30.02% (w/w) to 26.70% (w/w). the highest soluble protein content was obtained on the 14th day which was 1.53% and the lowest was on the 70th day, which was 1.31%. The result of the SEM test showed that there was a reduction in the pore size of bread compared to on day 0. The results of DSC thermogram showed that the longer the frozen storage of bread with the initial cooking of steaming, the lower the gelatinization and enthalpy temperatures, and the smaller the pore size is small. Storage of frozen bread until day 56 resulted in bread quality that has nor changed and is still accepted by the panelists.
E-Retailing study: A bibliometric analysis and systematic literature review William Widjaja; Yudhi Widya Arthana Rustam
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.783

Abstract

Along with the increasing popularity of online shopping in Indonesia, the E-retailing business has increased in recent years in Indonesia. This research aims to analyze the trends and developments of e-retailing in Indonesia and globally. This research is a type of literature study research with a qualitative approach. The analysis technique used is bibliometric analysis and systematic literature review using VOS viewer software. The results showed eight main clusters related to e-retailing: chatbot, customer satisfaction, purchase intention, customer experience, artificial intelligence, social media, and mobile commerce. This shows that chatbots, customer satisfaction, purchase intention, and customer experience are important factors that influence the success of e-retailing. This research also shows that e-retailing is still new and needs to be continuously developed. This can be seen from the low density of research related to this topic.
Analysis of raw material inventory control for hinge upper assembly products using the economic order quantity method Rifda Ilahy Rosihan; Suci Trisa Kartika; Jasan Supratman; Paduloh; Ratih Kumalasari
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.829

Abstract

Every business, but particularly those in the industrial sector, have what is known as inventory. In order for the business to survive and carry on with production, inventory is crucial. Inventory control makes sure that products and resources don't run out of stock or become overstocked, which could lead to higher inventory costs and a halt in production. A business engaged in manufacturing is called PT. X. Hinge Upper Assy is one of the products that PT. X manufactures. Overproduction of raw materials caused issues for the hinge upper assembly material during the process, raising the overall cost of inventory. The EOQ (Economic Order Quantity) approach is one inventory control technique that determines overall inventory costs. The EOQ approach takes into account the frequency of orders, the amount of orders per order, safety stock, and reorder points in addition to inventory costs. The purpose of this study was to determine the overall cost of inventory at PT. X using the EOQ approach, as well as the frequency and quantity of orders, safety stock value, and reorder points. The study's findings indicate that the overall cost of inventory with EOQ is IDR 2,500,752.00, with a frequency of orders placed twice and a quantity per order of 20167 pieces, safety stock of 3242.28, and a reorder point of 3257 pieces. When comparing the EOQ approach to the company's traditional method, there was a 63% savings in total inventory expenses.
Comparison of naive Bayes and decision tree algorithms to assess the performance of Palembang City fire and Disaster management employees Dewi Sartika; Rendra Gustriansyah
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.843

Abstract

The employee performance assessment at the Palembang City Fire and Disaster Management Service (DPKPB) is applied to other than the employee performance assessment implementation team based on the Decree of the Head of the Palembang City DPKPB Number 146 of 2021 concerning the employee performance assessment implementation team and awards for exemplary employees. Subjective assessments are avoided to obtain assessment results that are by the achievements of each employee. The application of data mining can be an alternative to avoid subjectivity in performance assessment. In this research, a comparison of the Naive Bayes and Decision Tree algorithms was carried out to assess the performance of Palembang City DPMPB employees. The results of further research will be used as an alternative solution in conducting performance assessments that are more objective than previous assessments. Both algorithms were evaluated for model performance using the Confusion Matrix. Based on the results of the evaluation carried out, it was stated that the Decision Tree algorithm had better accuracy, namely 91.74% compared to Naïve Bayes which had an accuracy of 88.99% with a test size of 0.4
The intelligent approach is used by decision support systems for tourist destinations in North Sumatra Taufik Abdullah; Jeremia Jordan Sihombing; Maulana Malik Fajri; Debi Yandra Niska
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.594

Abstract

The sheer amount of tourism attractions in North Sumatra makes it difficult for visitors to choose where they wish to travel. Tourists can select the ideal place, but they must also deal with a number of issues, such as time and financial limits, which can significantly influence the selection. Therefore, the goal of this study is to assist travelers in selecting the top tourist destination in North Sumatra based on their time and financial constraints. The Simple Attribute Rating Technique (SMART) technique is employed in this study to choose tourist attractions based on four criteria: the measurement of the distance to tourist locations from the city center, the quantity of public tourist facilities, the cost of entrance tickets to attractions, and the daily average of visitors to attractions. The study's findings show that the Decision Support System is competent at handling data and making the best suggestions for tourism attractions. The findings revealed that Sibolangit Forest was the superior alternative in general. Sipiso-piso In addition, waterfall was chosen as the best substitute for places with waterfalls, Lake Toba was chosen as the best substitute for destinations with lakes, and Dua Rasa River was chosen as the best substitute for destinations with rivers. One piece of advice is to compare it to other decision support system techniques and add other factors, such as cleanliness, safety, age, tour kind, and ease of access to tourist attractions  
Study of orientation effects to pool boiling heat transfer performance from the circular pin fins structure Yasirul Khoiri; Indro Pranoto; Muhammad Aulia Rahman
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.937

Abstract

Increasingly sophisticated technological advances generate heat that needs to be managed properly to ensure the optimality of the operation of these components. One solution offered is the pool boiling cooling method, which has a high heat transfer coefficient. This research aims to study how the orientation angle of the boiling pool affects the heat transfer coefficient. This approach aims to improve cooling effectiveness, especially in the context of moving systems, where the influence of orientation angle is an important factor. In the research related to pool boiling, various orientation angles from 0° to 20° were used on aluminum-based fins in the form of inline pin fins. These fins have a circular shape with a size of 30 mm × 30 mm. The working fluid used in this study is HFE-7100, which has dielectric properties. This study was conducted with heat levels ranging from 10 to 50 W before reaching the Critical Heat Flux (CHF) value. The results show that the orientation angle has a significant impact on the heat transfer coefficient as well as the dynamics of bubble formation. The results also indicate that the greater the orientation angle, the smaller the area of spread and bubble growth that occurs. This decrease in bubble growth area results in an increase in surface temperature. With the circular pin fins test specimen, an increase in surface temperature was found in this study, when the angle θ = 10° amounted to 1.08℃, for the angle θ = 20° amounted to 2.37℃ under the condition of q'' = 55.56 kW/m2. While the highest average value of heat transfer coefficient  occurs at angle θ = 0°, the value  reaches 3.91 kW/m2∙K and decreases at angle θ = 10° by 3.79%, for angle θ = 20° by 6.56%
Rice husk ash as a substitute for silica gel Rahmad Bonanza; Dan Mugisidi
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.943

Abstract

Silica gel has been widely used as a dryer for food, medicine and various other purposes. Silica gel is basically a safe material, but because of its hydroscopic nature, silica gel is easily contaminated with dangerous materials. Apart from that, silica gel cannot decompose easily naturally, so using large amounts of silica gel will cause piles of silica gel waste. Therefore, efforts are being made to find replacement materials, one of which is using rice husk ash which can easily decompose naturally. This research aims to test the ability of rice husk ash as a substitute for silica gel. Tests used commercial silica gel (SG), silicon gel in non-woven geotextile bags (SG-N), and rice husk ash in non-woven geotextile bags (AS-N). In this study, AS-N was compared with SG and SG-N. The water vapor absorption test was carried out on a weight of 15 grams for 180 minutes. Each of the three samples was placed in a closed jar to avoid contamination with water vapor in the environment. The relative humidity of each jar was measured with a hygrometer. The jar lid was kept closed throughout the test. The results showed that SG, SG-N and AS-N reduced humidity by 23%, 22% and 24% respectively. Modeling with the Avrami equation is used to extrapolate the absorption results. The research results showed that 15 gram non-woven geotextile rice husk ash had superior water vapor absorption capabilities compared to silica gel and silica gel non-woven geotextiles. So it can be concluded that dryers with rice husk ash as the basic material can be used for needs such as clothes dryers, food dryers and other needs
Exhaust gas emissions in daihatsu granmax vehicles based on the year of manufacture Fikri Setiawan; Ali Akbar; Mulyadi
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 11 No 1 (2024): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika
Publisher : LPPMPK- Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v11i1.945

Abstract

Air pollution is a condition caused by exhaust gas from motorized vehicles operating on the highway. To minimize greater air pollution, the government is making preventive efforts by carrying out periodic vehicle emission tests which are currently being carried out. carry out transport targeting vehicles. The research aims to determine the year of the vehicle that produces the dominant CO (carbon monoxide) and HC (hydrocarbon) exhaust emissions which were tested based on vehicle year from 2017 to 2022, with the type of gasoline-fueled vehicle, in this case the Daihatsu granmax. The method used is experimental using Manova analysis of 30 samples used with variations in data taken from testing CO and HC exhaust emissions on 30 samples with 5 vehicles each in each year of production. The results of the research that has been carried out show that the emission test results on sample data show the highest CO exhaust emissions in vehicles in 2017 and the lowest in vehicles in 2021, while the HC test results in vehicles in 2017 are the highest and continue to decline to the lowest point in vehicles in 2022, this provides a conclusion: Vehicles produced longer have the potential to produce high exhaust emissions, while vehicles produced younger do not cause exhaust emissions

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